True or False: Storage tanks must be equipped with a vent.

Storage tanks must indeed be equipped with a vent to ensure safe operation and to comply with safety regulations. Vents allow gases and vapors to escape or enter the tank during filling, emptying, and temperature changes, preventing pressure build-up or vacuum conditions that could lead to tank failure or accidents. The venting process is crucial for avoiding hazardous situations such as tank rupture, explosion, or spillage of the contained fluids.

Proper venting is essential for tanks containing flammable or toxic substances, as it helps to mitigate the risks associated with volatile vapors accumulating in the storage environment. Additionally, adhering to standards set forth by organizations like the American Boat and Yacht Council (ABYC) is critical for ensuring safety and compliance with maritime regulations.

The other choices implying scenarios where venting might not be necessary, such as only for specific fluids or depending on the tank size, do not accurately reflect the general requirement for safe tank operation. All storage tanks, regardless of their contents or size, should include a vent system to promote safety and regulatory compliance.